Ahuman body while sleeping generates about 300 btus of body heat per hour. if two people are sleeping in a bedroom that is 15 ft × 12 ft × 10 ft, how many btus per cubic foot do they produce in 7 hours? (to the nearest tenth)

given:

one person can produce:

E = 300 BTUs of body heat per hour

dimensions of the bedroom is:

V = 15 ft × 12 ft × 10 ft

required: is the energy per volume if 2 persons sleeps in 7 hours

let T be the total energy produce per volume

T = (300 BTU per hour per person) ( 7 hours) ( 2 person) / (  15 ft × 12 ft × 10 ft)

T = 2.3 BTU / ft^3

Step-by-step explanation:

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

just get this app called photo math it should be able to do those