Which exponential function has an initial value of 2? a) f(x) = 2(3^x) b) the first picture c) f(x) = 3(2^x) d) the last picture

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60