Which of the following are advantages of certificates of deposit (cds) over savings accounts?
i. cds are more readily accessible than savings accounts.
ii. cds offer greater interest rates than savings accounts.
iii. cds have greater fdic backing than savings accounts.

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect