Which expression is correctly simplified using the laws of exponents?

When a number is added to 30, the sum is *20. What is the number?

Three less than four times a number

Round 8,003 to the nearest ten.

A research study was conducted about gender differences in "sexting." The researcher believed that the proportion of girls involved in "sexting" is less than the proportion of boys involved.

75 to 45 simplest form

A store had 800 T-shirts in stock for a weekend sale. T-shirts are sold in packs of 4 each. During the sale, 20 packs of T-shirts were sold on Saturday, and 70 more packs were sold on Sunday.

What is the slope for the following equation 9x + 2y = 9

How is 3*7 and 6*7 related

The weight of the candy that Eric collected was one thousand six hundred thirty-four grams more than the weight of the candy Timothy collected. Timothy collected three and eight hundred forty-five grams of candy. how much candy did Eric collect?

What is (-4) to 5th power simplified