Do u guys know what this + can someone me?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Acaterpillar eats 1400\%1400% of its birth mass in one day. the caterpillar's birth mass is mm grams. which of the following expressions could represent the amount, in grams, the caterpillar eats in one day? \