5272道题目5525 条题源记录 · 相同内容已合并
函数记号・代入与复合进阶
The function \( f \) is defined by \( f\left(x\right)=4^{\left(x-2\right)}+8 \). What is the value of \( f\left(2\right) \)?
原库参考解析
函数记号・代入与复合进阶
The function j is defined by \( j\left(x\right)=\frac{x}{8} \). What is the value of \( j\left(48\right) \)?
原库参考解析
函数记号・代入与复合挑战
The function g is defined by \( g\left(x\right)=-18-9x \). For what value of x does \( g\left(x\right)=-216 \)?
原库参考解析
函数记号・代入与复合进阶
The function \( f \) is defined by\( f\left(x\right)=3\left(\frac{1}{4}-x\right)^2+\frac{5}{4} \). What is the value of\( f\left(\frac{1}{4}\right) \) ?
原库参考解析
函数记号・代入与复合进阶
The function \( f \) is defined by \( f\left(x\right)=-3x+20 \). What is the value of \( f\left(x\right) \) when \( x=-7 \) ?
原库参考解析
函数记号・代入与复合挑战
The function \( f \) gives the product of a number, x, and a number that is 77 more than x. Which equation defines ?
原库参考解析
函数记号・代入与复合挑战
The function \( f \) is defined by \( f\left(x\right)=3x^2 \). What is the value of \( f\left(7\right) \)?
原库参考解析
函数记号・代入与复合进阶
The function \( f \) is defined by \( f\left(x\right)=5x^3+3 \). What is the value of \( f\left(2\right) \)?
原库参考解析
函数记号・代入与复合挑战
For a certain type of rope, the equation \( y=900ax^2 \) , where a is a constant, gives the estimated breaking strength y , in pounds, of a rope with a circumference of x inches. Based on this equation, if a rope of this type has a circumference of 0.75 inches, it has an estimated breaking strength of 708.75 pounds. What is the estimated breaking strength, in pounds, of a rope of this type that has a circumference of 4.50 inches?
原库参考解析
函数记号・代入与复合进阶
The function \( f \) is defined by \( f\left(x\right)=7+\sqrt{x} \). What is the value of \( f\left(36\right) \)?
原库参考解析
函数记号・代入与复合进阶
If \( f\left(x\right)=x+5 \) and \( g\left(x\right)=5x \), what is the value of \( 7f\left(4\right)-g\left(4\right) \)?
原库参考解析
函数记号・代入与复合进阶
The function \( f \) is defined by \( f\left(x\right)=5x^2 \). What is the value of \( f\left(7\right) \)?
原库参考解析
