An executive invests $26,000, some at 8% and some at 6% annual interest. if he receives an annual return of $1,860, how much is invested at each rate?

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

tbh idek ek fsdgn f gsdj fgnf

ok so here is a breif explanation for irrational number,"an irrational number cannot be expressed as a ratio between two numbers and it cannot be written as a simple fraction because there is not a finite number of numbers when written as a decimal. instead, the numbers in the decimal would go on forever, without repeating".

first answer,d

2nd=a

3rd=c

example of rational "a rational number is a number that can be written as a ratio. that means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. the number 8 is a rational number because it can be written as the fraction 8/1".

so it would be either c or d.

and lastly is a