An arithmetic sequence has a 10th term of 15 and 14th term of 35. what is the common difference?

common diferrence = 5

Step-by-step explanation:

nth term =   a + (n - 1)d

10th term ;                 a + 9d = 15 (i)

14th term;                  a + 13d = 35 (ii)

subtract (ii) from (i)       -4d = -20

                                         d = -20/-4

                                          d = 5

the answer is 288..

hope this

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold