I really need help on this please.

3x+4y=36 y=-0.5x+8 substitution​

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

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year