The answer is A. -8
(step by step)
Do multiplication first. 7 * -8 = -56
Now subtraction. -56 - (-8) = -48
Hope this helped! ☺♥
1.) Start by figuring out what the 4x3 grid would look like. In this grid, we have 12 boxes (4 x 3 = 12).
2.) Now let's calculate 25% of 12. When changing a percent to a decimal, simply move the decimal point over to the left two places. So then 25% = .25 when written as a decimal. Multiply 25 x 12. 25% of 12 equals 3.
3.) Now your grid would have 3 boxes shaded in. I put two examples of this in the attached image. However, your boxes can be shaded in anywhere in the grid, as long as only 3 of them are shaded in!
(x + 10(x - 10)
x^2 + 10x - 10x -100
x^2 - 100
a. + (-10x)
b. 0x
c. + (-100)
d. (-100)
3A+2B=20
2A+B=13 ➡×(-2)➡-4A-2B=-26
3A+2B-4A-2B=20-26
-A=-6 ➡A=6
2(6)+B=13➡B=1
18.) 13.796
19.) 39.99
21.) 14.82
22.) 2.23
The decimal doesn't matter for subtraction and addition. It just goes down with the answers.