I NEED HELP I'M IN TIMER:
Which equation can be used to represent the statement?

Half of a number minus seven is one and five-tenths.
a)One-half + x = 1.5
b)One-half x minus 1.5 = 7
c)StartFraction x over 2 EndFraction minus 7 = 1.5
d)7 minus StartFraction x over 2 EndFraction = 1.5

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2