All this question is asking you to do is multiply 65 and 7. The 7 comes from the amount of days in a week. The product of these numbers is 455.
Maria did 455 sit-ups in a week.
Okay so similier to the other problem right? First we need to them to have common denominators. How do you think we would do that?
A would be the closest estimate
4(8) - 3 • 81
The first one
Parentheses ()
Exponents ^x
Multiplication/Division */
Add/Subtract +-
12-3(10+23):9x(-2)
(I don’t understand the “:” but it is right next to the / sign, so I will solve like that)