Which first step for solving the given using substation results in an equation without fractions? 3x+y=9 5x-3y=1
a) solve for x in the first equation
b)solve for y in the first equation
c) solve for x in the second equation
d)solve for y in the second equation

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Describe the domain and range of y=2(3)^x-2+5

Anut store normally sells cashews for? $4.00 per pound and peanuts for? $1.50 per pound. but at the end of the month the peanuts had not sold? well, so, in order to sell 40 pounds of? peanuts, the manager decided to mix the 40 pounds of peanuts with some cashews and sell the mixture for $2.00 per pound. how many pounds of cashews should be mixed with the peanuts to ensure no change in the? profit?