David wants to my have a board for $398.50. he has saved $350 so far. stores offering a discount for 15% for the month of january. will david have enough money to buy the hoverboard during the month of january?

Yes, he will

Step-by-step explanation:

398.50 x .15 = 59.775

398.50-59.775=338.725

350>338.725

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

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7