Write an algebraic expression:
14. three less than seven times an number

7x - 3

Step-by-step explanation:

Seven times a number is 7x since the number is unknown. Three less than that is found by subtracting three from 7x, so the equation is 7x - 3.

the answer is 0.5 mpm

step-by-step explanation:

the line goes half way through the square each time (which is 0.5 or half of course) so that would mean its 0.5 mpm.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50