For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b. a. ( 2b, 2b+7). b. ( 2b, x + 7). c.( x, x + 7 ). d. (x, 2b + 7)

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%