2 Would be your answer if the units are positive.
Answer:no he misses the rate he needs to run by 30m seconds
Step-by-step explanation:
45/5=9
f(x) = (3x+5)/7
Step 1:
we write f(x) as y
y=(3x+5)/7
Step 2:
switch y by x and x by y
x=(3y+5)/7
Step 3:
solve for y,
x=(3y+5)/7
multiply both sides by 7
7x=3y+5
subtract 5 from left side
3y=7x-5
divide both sides by 3
y= (7x-5)/3
f⁻¹ (x) =(7x-5)/3
Im not sure about the second one, but for the first one, Alex’s height is 167.64 cm. :)