Steve, 18 years old, is three times as old as his brother daniel. how old will steve be when he will be twice as old as daniel?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.