The function c(x) = 63 - (1.03)" models the cost in dollars, c, of 1 ounce of a certain chemical used in a laboratory, v represents the number of years since 1990. How much does an ounce of the chemical cost in 2005? ​

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

What is the lcm of 16 and 40 ? 24 and 40 ?