Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If (F(t)=20+rt) and (F(2)=F(5)-18), what is (r)?

Answer and explanation

Correct answer: 6

Given \(F(2)=F(5)-18\), we get \(F(5)-F(2)=18\). For the linear function \(F(t)=20+rt\), \(F(5)-F(2)=(20+5r)-(20+2r)=3r\). Hence \(3r=18\), so \(r=6\). If \(r=5\), the difference would be only 15, so it is not correct. Exam tip: when subtracting two values of a linear function, the constant term 20 cancels out.

Related tags

Linear FunctionsLinear GrowthRate Of ChangeAlgebraic EquationsFunction ValuesLinear Growth And DecayIntroduction To PolynomialsMathematics

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.