Apetroleum laboratory technician is working at a petroleum storage depot in the oil-analysis laboratory. the lab tech is running tests on a sample from a 45-gallon oil-solvent mixture that contains 18 gallons of oil.

what is the ratio of the number of gallons of oil to the number of gallons of solvent?

answer: i can’t tell you that

step-by-step explanation:

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

step-by-step explanation:

gym b charges $1.05 less per hour than gym a.