evaluate the expression.

r = < 7, -3, -7> , v = < 4, 6, -5> , w = < -5, -6, -3>

v ⋅ w

a) -41
b) < -20, -36, 15>
c) < -28, 18, -35>
d) -9

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way