Part of the graph representing an electrical signal is shown. the voltage rises steadily from an initial value (a) to a maximum value (b). it then drops instantly to the initial value (c) and repeats such that ab || cd and bc and de are vertical. if a = (1, 1) and b = (4, 3), what is the equation of cd ?
-3y − 2x = 5
3y − 2x = 5
3y − 2x = -5
3y + 2x = 5

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

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)