which expression is equivalent to the expression below?

4r + 9 + r+ 2p - 3

choices:

5r + 2p + 6

7r + 6

14r - p

5r + 2p - 12

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Atemperature of 1.64◦f corresponds to answer in units of ◦c.