Which expression is equivalent to -3(2b + 9) + 5(-5b + 6)? a. -23b + 3

b. 3b - 31

c. -31b + 3

d. -11b + 3

What is the simplified expression for 6(2(y+x))

What is the number 321,000,000 in scientific notation? also what is the number? ?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?