ILL MARK BRAINLIST Which option identifies if the study in the following scenario is valid at the margin of error and correctly explains why or why not?
A researcher seeking a margin of error of 5% designs a study for a sample size of 144.

Yes, because 53 = 225 > 144

Yes, because = 0.69% < 5%

No, because 144 * 5% = 7.2 > 5

No, because = = 8.3% > 5%

Find the quotient. 50a2 – 98b2 -5a +7b

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Fawn bought a total of 70 cakes for a tea party. she spent $3,025. fawn bought vanilla cakes for $22 each and a fruit filled cake for $55 each. the system of equations below can be used to find the number of vanilla cakes, v, and the number of fruit filled cakes, f, fawn purchased. which system of equations has the same solution as the system below.