Find the percent of change. 68 to 42.5

The map of a biking trail is drawn on a coordinate grid. The trail starts at P (-5, 4) and goes to Q (2, 4). It goes from Q to R (2, - 2) and then to S (7, - 2). What is the total length (in units) of the biking trail?

An initial population of 7 chipmunks in Mary's yard increases by 6% each year. If the function f (x) = abx models this situation, what is the population of the chipmunks in 5 years? (to the nearest whole number)

Is $24 saved after 3weeks equivalent to$52 saved after7 weeks

Find the selling price. Original price of the telescope: $99.99 Discount: 13%

Elena and her husband Marc both drive to work. Elena's car has a current mileage (total distance drove) of 13,000 and she drives 15,000 miles more each year. Marc's car has a current mileage of 32,000 and he drives 15,000 miles more each year.

A borrower pays 18% interest per year on the first Rs. 600 he borrows and 17% per year on the loan on the part of the loan in excess of Rs. 600. How much interest will the borrower pay on the loan of Rs. 6000 for one year? [CMAT 2004) a. Rs. 1,020 b.

What is 230,000 written in scientific notation?

Work out the value of 2a + ay when a = 5 and y = - 3

Ashton estimates the square root of 72 in the following way: √72 = 2√36=2*6=12 A) Explain why his reasoning is incorrect. B) Estimate the square root of 72 to the nearest tenth without using your calculator. Show your work.

Laura tiene 30 años menos que su padre y este tiene el cuadruple de los años de su hija. cual es la edad de cada uno ayudenme por favor