If a_1=9a 1

=9 and a_n=a_{n-1}+2a
n

=a
n−1

+2 then find the value of a_4a
4

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.

What is the absolute value of the complex number -4- 2 v14 3.15 14 18