Gas cost $3.53 per gallon in may. in september, gas cost $3.05 per gallon. what was the percent change in the cost of a gallon of gas

The percent change in the cost of a gallon of gas is 13.59 %

Solution:

We have been given the data of cost of Gas in two months these are May and September

The cost of Gas in month of may is $3.53 per gallon

The cost of Gas in month of September is $3.05 per gallon

We have to determine the percentage change in the cost of gas

Difference in cost of gas = 3.53 – 3.05= 0.48

% change in cost of gas = 13.59 %

So, the price of the Gas was decreased by 13.59% from may to september

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.