Pump B can fill 3 identical tanks in 60 min. How long does it take Pump B to fill one tank?
a. 6 min
b. 10 min
C. 12 min
d. 20 min

d. 20 min

Step-by-step explanation:

60 minutes divided by 3 tanks = 20 minutes each

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

step-by-step explanation:

the true ones are a b and d