Answer:
6
Step-by-step explanation:
The answer is 7
987
x^9-1,0^3
and you can use Microsoft maths solver to help you it help solve and explain how to do the math
D because y (time spent) = 50 × x (distance travelled)
225÷4.5=50
x÷y=50
f(9)=54
Subsitute 9 for x in f(x)=6x
