Substitute 18 for a and -13 for b on the right side of the equation. Substitute 18 for A and - 13 for B on the right side of the equation. Simplify the expression on the left side of the equation to . the equation simplifies to . This means that the equation is true for number(s). Therefor, the equation has solution(s).

1st blank choices: (6x-1),(6x-7), (18x-13), (18x-15)

2nd blank choices: (-13=-13), (-15=-13), (x=0.5), (x=1)

3rd blank choices: one, all, no

4th blank choices: no, one, infinitely many

Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias