Agroup of students organized a car wash to raise money for a local charity. the students charged $5.00 for each car they washed. in 3 hours, they washed 12 cars. at that rate, how much money could they earn from washing cars for eight hours?

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

597008.439431 to the nearest thousand