Apublic opinion researcher has a budget of $20,000 for taking a survey. she knows that 90% of all households have telephones. telephone interviews cost $10 per household; in-person interviews cost $30 each if all interviews are conducted in person, and $40 each if only nonphone households are interviewed in person (because there will be extra travel costs). assume that the variances in the phone and nonphone groups are similar, and that the fixed costs are co $5000. how many households should be interviewed in each group if a all househol ds are interviewed in person households with a phone are contacted by telephone and households without a phone are contacted in person. b

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk