3 (x+2) = 5x in backtracking method

Estimate 1 5/5 plus 2 2/12

Factor 4x2-100 completely

Is there anyone really good at math

Combine like terms. y + 2 + 7 (y + 9) =

What is 4x2 - 17x-15=0 using the quadratic formula

Write a number that completes the analogy: x to the power of 2 is to 121, as x to the power of 3 is to?

John has twice as many dimes as nickels. All together he has $2.75. How many dimes do he have?

Explain how to write a function rule from the table below. Then write a function rule X|2|4|6 Y|1|0|-1

A man went into a bank to cash a check. In handing over the money the cashier, by mistake, gave him dollars for cents and cents for dollars. He pocketed the money without examining it, and spent a nickel on his way home.

Question: An emperor penguin is 45 inches tall. It is 24 inches taller than a rockhopper penguin. Write and solve an equation to find the height (in inches) of a rockhopper penguin. Is your answer reasonable? Explain.