Prehistoric cave paintings were discovered in a cave in france. the paint contained
23% of the original carbon-14. the half-life of carbon-14 is 5730 years. estimate the age of the paintings

Which of the following is a proper fraction? a. 9⁄8 b. 5⁄6 c. 7⁄3 d. 4⁄2

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?