The sum of nine and three times a number is 57 find the number and write an equation

7.5x10^5-2.9x10^4=? having trouble

There is a mountain with 45 bat caves in a row. Every cave has at least 2 bats and there are 490 bats in all. Any 7 caves in a row contain exactly 77 bats. Suppose the first cave has 7 times more bats than the last cave.

What is the common difference between successive terms in the sequence? 0.36, 0.26, 0.16, 0.06, - 0.04, - 0.14,

Could you use the double fact to find the sum for 4+5? Choose yes or no 4+4=8 Yes or no 5+5=10 yes or no 9+9=18 yes or no

What is the slope intercept form of y=-x+1

How much simple interest did his money earn?

The johnson family can fly from washington d. c to london for $0.18 per mile per person. the distance is 3,663 miles. how much will the trip cost for 4 people to go

If two parallel lines are cut by a transversal, how do alternate interior angles compare?

an ice rink inspects 25 pairs of skates, 2 were defective. The ri k has 151 pairs of skates. Estimate the number of pairs that are likely to be defective.

If I have a 58% in my PreCalculus class, and I score a 29/40 on a test that is worth 18% of my grade, what will my overall grade be?