Betsie tried to solve an equation step by step.

3 (a + 7) = - 33

-33

a + 7 = - 11

Step 1

a = - 4

Step 2

Find Betsie's mistake.

What is |88| - in absolute value and opposite integers?

Nine percent of men are color blind. Researchers need at least 60 men with this trait, so they randomly select 700 men. Estimate the probability that at least 60 color-blind men are in the sample.

A school choir needs to make T-shirts for its 75 members and has set aside some money in their budget to pay for them.

Find the sum and express it in simplest form. (3a2+2a) + (5a2-a-7)

John and Ling start their new jobs on the same day. John's schedule is 4 workdays followed by 1 day off. Ling's schedule is 7 workdays followed by 2 days off.

Which expression is equivalent to (2mn) ^4/6m^-3 n^-2? Assume m=0 n=0

Admission to a county fair is $4.50 per person. The Rodriguez family pays $22.50 for admission to the fair. Which equation can you use to find p, the number of people in the Rodriguez family?

What is the slove system of linear equation by elomination of 8x-5y=11 and 4x-3y=5

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Choose the smallest set of which {5,2,23} is a subset