Use the graph below to determine a1 and d for the sequence.

graphed sequence showing point 1, negative 7, point 2, negative 17, point 3, negative 27, point 4, negative 37, point 5, negative 47, and point 6, negative 57

a1 = −7; d = 10
a1 = −7; d = −10
a1 = 1; d = 10
a1 = 1; d = −10

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15