John checked out The Rat Journal and it has 63 pages. If John reads everyday
for three weeks, how many pages per day does he need to read?

Collin did the work to see if 10 is a solution to the equation r/4=2.4

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

Simplify each expression. use positive exponents. show work . (x –2 y –4 x 3 ) –2